/* ═══════════════════════════════════════════════════════════════
   Design Tokens — Academic Reporting System
   Inspired by: University excellence, clarity, trust, accessibility
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* ═══ Core Colors — Inspired by academic tradition ═══ */
  --color-primary-50: #eef2ff;
  --color-primary-100: #e0e7ff;
  --color-primary-200: #c7d2fe;
  --color-primary-300: #a5b4fc;
  --color-primary-400: #818cf8;
  --color-primary-500: #6366f1;
  --color-primary-600: #4f46e5;
  --color-primary-700: #4338ca;
  --color-primary-800: #3730a3;
  --color-primary-900: #312e81;

  --color-accent-50: #fff7ed;
  --color-accent-100: #ffedd5;
  --color-accent-500: #f97316;
  --color-accent-600: #ea580c;

  /* ═══ Semantic Colors ═══ */
  --color-success-500: #10b981;
  --color-success-600: #059669;
  --color-warning-500: #f59e0b;
  --color-warning-600: #d97706;
  --color-error-500: #ef4444;
  --color-error-600: #dc2626;
  --color-info-500: #3b82f6;
  --color-info-600: #2563eb;

  /* ═══ Neutral Colors ═══ */
  --color-neutral-50: #f9fafb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-200: #e5e7eb;
  --color-neutral-300: #d1d5db;
  --color-neutral-400: #9ca3af;
  --color-neutral-500: #6b7280;
  --color-neutral-600: #4b5563;
  --color-neutral-700: #374151;
  --color-neutral-800: #1f2937;
  --color-neutral-900: #111827;

  /* ═══ Light Theme ═══ */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --bg-overlay: rgba(0, 0, 0, 0.5);
  
  --surface-default: rgba(255, 255, 255, 0.85);
  --surface-elevated: rgba(255, 255, 255, 0.95);
  
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-tertiary: #9ca3af;
  --text-inverse: #ffffff;
  
  --border-subtle: #e5e7eb;
  --border-default: #d1d5db;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* ═══ Glassmorphism ═══ */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.3);
  --glass-blur: blur(20px);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.12);

  /* ═══ Typography ═══ */
  --font-primary: 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* ═══ Spacing Scale (8px base) ═══ */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* ═══ Border Radius ═══ */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* ═══ Transitions ═══ */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* ═══ Layout ═══ */
  --sidebar-width: 280px;
  --sidebar-collapsed: 80px;
  --topbar-height: 72px;
  
  /* ═══ Z-Index ═══ */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

[data-theme="dark"] {
  --bg-primary: #0a0f1e;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-overlay: rgba(0, 0, 0, 0.75);
  
  --surface-default: rgba(31, 41, 55, 0.8);
  --surface-elevated: rgba(31, 41, 55, 0.95);
  
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --text-inverse: #111827;
  
  --border-subtle: #374151;
  --border-default: #4b5563;
  
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  
  --glass-bg: rgba(31, 41, 55, 0.6);
  --glass-border: rgba(75, 85, 99, 0.3);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}